Omnicom Group Inc.
US ˙ NYSE ˙ US6819191064

SecurityOMC / Omnicom Group Inc.
InstitutionCandriam Luxembourg S.C.A.
Latest Disclosed Ownership17,274 shares
Latest Disclosed Value $ 1,300,905
Candriam Luxembourg S.C.A. ownership in OMC / Omnicom Group Inc.

On April 30, 2026 - Candriam Luxembourg S.C.A. filed a 13F-HR form disclosing ownership of 17,274 shares of Omnicom Group Inc. (US:OMC) valued at $1,300,905 USD as of March 31, 2026. The entity filed a previous 13F-HR on November 6, 2025 disclosing 0 shares of Omnicom Group Inc.. The current value of the position is $1,300,905 USD.

Institutional Ownership: 13F and NPORT Filings

The Security and Class in the table below are shown exactly as filed by the investor. We do our best to track continuity of investments through acquisitions, and this will be reflected in the table as changes in names. In addition to descriptive data, performance of the investment is shown over time. To calculate quarterly performance, we first calculate cost basis of the shares purchased during the quarter, then use that to calculate gross profit. Quarterly return is Gross Profit / Starting Portfolio value.

Note that cost basis is calculated and stored in thousands, so small quarterly changes in shares frequently result in a cost basis of zero.

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Disclosed Equity Positions (from 13F/NPORT Filings)
File
Date		 Effective
Date		Form Security Class ID Avg Price
Paid (Est)		 Reported
Shares		 ΔShares ΔShares
(%)		 Reported
Value
(x1000)		 ΔValue
(%)		 Alloc
(%)		 ΔAlloc ΔAlloc (%) Cost Basis
(x1000)		 Unrealized
Gain/Loss
(x1000)
2026-04-30 2026-03-31 13F OMNICOM GROUP COM 681919106 17,274 17,274 1,301 0.0068
2025-11-06 2025-09-30 13F OMNICOM GROUP COM 681919106 0 -21,534 -100.00 0 -100.00
2025-08-08 2025-06-30 13F OMNICOM GROUP COM 681919106 21,534 -42,282 -66.26 1,549 -70.72 0.0089
2025-05-14 2025-03-31 13F OMNICOM GROUP COM 681919106 63,816 -7,896 -11.01 5,291 -14.26 0.0331
2025-02-07 2024-12-31 13F OMNICOM GROUP COM 681919106 71,712 -41,468 -36.64 6,170 -47.27 0.0355
2024-11-13 2024-09-30 13F OMNICOM GROUP COM 681919106 113,180 37,962 50.47 11,701 73.45 0.0672
2024-08-05 2024-06-30 13F OMNICOM GROUP COM 681919106 75,218 17,287 29.84 6,747 20.36 0.0409
2024-05-06 2024-03-31 13F OMNICOM GROUP COM 681919106 57,931 43,239 294.30 5,605 340.99 0.0358
2024-02-14 2023-12-31 13F OMNICOM GROUP COM 681919106 14,692 -4,142 -21.99 1,271 -9.34 0.0088
2023-11-13 2023-09-30 13F OMNICOM GROUP COM 681919106 18,834 960 5.37 1,403 -17.53 0.0099
2023-08-08 2023-06-30 13F OMNICOM GROUP COM 681919106 17,874 -35,660 -66.61 1,701 -63.43 0.0123
2023-05-12 2023-03-31 13F OMNICOM GROUP COM 681919106 53,534 22,357 71.71 4,649 82.85 0.0322
2023-02-13 2022-12-31 13F OMNICOM GROUP COM 681919106 31,177 -11,660 -27.22 2,543 -5.92 0.0172
2022-11-10 2022-09-30 13F OMNICOM GROUP COM 681919106 42,837 26,870 168.28 2,702 165.94 0.0190
2022-08-03 2022-06-30 13F OMNICOM GROUP COM 681919106 15,967 0 0.00 1,016 -25.02 0.0084
2022-05-13 2022-03-31 13F OMNICOM GROUP COM 681919106 15,967 -5,974 -27.23 1,355 -15.73 0.0092
2022-02-10 2021-12-31 13F OMNICOM GROUP COM 681919106 21,941 1,603 7.88 1,608 9.09 0.0103
2021-11-09 2021-09-30 13F OMNICOM GROUP COM 681919106 20,338 -3,537 -14.81 1,474 -22.83 0.0100
2021-07-20 2021-06-30 13F OMNICOM GROUP COM 681919106 23,875 -24,231 -50.37 1,910 -33.75 0.0131
2021-04-29 2021-03-31 13F OMNICOM GROUP COM 681919106 48,106 0 0.00 2,883 -3.90 0.0240
2021-01-22 2020-12-31 13F OMNICOM GROUP COM 681919106 48,106 9,356 24.14 3,000 56.41 0.0237
2020-10-19 2020-09-30 13F OMNICOM GROUP COM 681919106 38,750 905 2.39 1,918 -7.16 0.0180
2020-07-23 2020-06-30 13F OMNICOM GROUP COM 681919106 37,845 -34,867 -47.95 2,066 -64.12 0.0218
2020-05-26 2020-03-31 13F OMNICOM GROUP COM 681919106 72,712 33 0.05 5,758 -2.21 0.0638
2020-02-05 2019-12-31 13F/A-1 OMNICOM GROUP COM 681919106 72,679 35,520 95.59 5,888 102.34 0.0631
2020-01-21 2019-12-31 13F OMNICOM GROUP COM 681919106 72,679 35,495 6 64,350.0644
2020-02-05 2019-09-30 13F/A-1 OMNICOM GROUP COM 681919106 37,159 71 0.19 2,910 -30.25 0.0386
2019-10-21 2019-09-30 13F OMNICOM GROUP COM 681919106 37,184 96 5 62,837.7529
2019-08-01 2019-06-30 13F OMNICOM GROUP COM 681919106 37,088 -32,005 -46.32 4,172 -32.82 0.0520
2019-05-02 2019-03-31 13F OMNICOM GROUP COM 681919106 69,093 -13,624 -16.47 6,210 2.51 0.0794
2019-02-14 2018-12-31 13F OMNICOM GROUP COM 681919106 82,717 -48,432 -36.93 6,058 -32.09 0.0931
2018-11-07 2018-09-30 13F OMNICOM GROUP COM 681919106 131,149 59,857 83.96 8,921 64.05 0.1186
2018-08-14 2018-06-30 13F OMNICOM GROUP COM 681919106 71,292 -69,809 -49.47 5,438 -46.97 0.0861
2018-05-09 2018-03-31 13F OMNICOM GROUP COM 681919106 141,101 -7,252 -4.89 10,254 -5.10 0.1749
2018-02-07 2017-12-31 13F OMNICOM GROUP COM 681919106 148,353 118,593 398.50 10,805 390.25 0.1869
2017-11-03 2017-09-30 13F OMNICOM GROUP COM 681919106 29,760 -3,608 -10.81 2,204 -20.32 0.0385
2017-07-31 2017-06-30 13F OMNICOM GROUP COM 681919106 33,368 -100,040 -74.99 2,766 -75.95 0.0520
2017-04-21 2017-03-31 13F OMNICOM GROUP COM 681919106 133,408 104,717 364.98 11,502 371.01 0.2227
2017-02-01 2016-12-31 13F OMNICOM GROUP COM 681919106 28,691 -3,620 -11.20 2,442 -11.07 0.0560
2016-11-15 2016-09-30 13F OMNICOM GROUP COM 681919106 32,311 5,884 22.27 2,746 27.48 0.0660
2016-07-26 2016-06-30 13F OMNICOM GROUP COM 681919106 26,427 -154,983 -85.43 2,154 -85.66 0.0560
2016-04-27 2016-03-31 13F OMNICOM GROUP COM 681919106 181,410 60,052 49.48 15,017 63.55 0.3755
2016-01-25 2015-12-31 13F OMNICOM GROUP COM 681919106 121,358 108,278 827.81 9,182 965.20 0.2456
2015-10-19 2015-09-30 13F OMNICOM GROUP COM 681919106 13,080 -1,065 -7.53 862 -12.31 0.0212
2015-07-29 2015-06-30 13F OMNICOM GROUP COM 681919106 14,145 -52,844 -78.88 983 -81.19 0.0205
2015-05-28 2015-03-31 13F/A-1 OMNICOM GROUP COM 681919106 66,989 18,258 37.47 5,225 38.41 0.1053
2015-04-27 2015-03-31 13F OMNICOM GROUP COM 681919106 66,989 5,224
2015-05-28 2014-12-31 13F/A-1 OMNICOM GROUP COM 681919106 48,731 48,731 3,775 0.0789
2015-03-26 2014-12-31 13F OMNICOM GROUP COM 681919106 49,541 49,541 3,838 0.0777
Legend
Shares
The total number of shares held by the institution at the end of the reporting period (the effective date). This is provided in the filing.
Value
The total value of the shares as of the effective date. This is provided in the filing.
Avg. Share Price
The weighted average share price of the shares held by the institution. We use FIFO accounting to determine this price
Class
This is the security class as indicated by the filer. There are a variety of values for this field. Common values include "EC" = equity common, "EP" - equity preferred
Allocation (%)
The percent of the institution's portfolio that this position represents. This is provided in NPORT filings. For 13F filings, we calculate it.
Change in Allocation
The change in allocation from the prior reporting period. This is calculated as current allocation - prior allocation.
Change in Allocation (%)
The percent change in allocation from the prior reporting period. This is calculated as (current allocation - prior allocation) / prior allocation.
Cost Basis
The total cost of the shares held. This is calculated as reported shares * avg. share price
Unrealized Gain/Loss
This is the market value of the position as of the effective date minus the cost basis.